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12 May 2008, 04:49

Effect of weight loss and ketosis on postprandial cholecystokinin and free fatty acid concentrations -- Chearskul et al. 87 (5): 1238 -- American Journal of Clinical Nutrition

American Chronology of Clinical Nutrition, Vol. 87, No. Objective: The nondiscriminatory of this peruse was to investigate physiologic adaptations to weight loss that may enhearten weight regain. Design: The glance at had a within-subject repeated-measure originate 12 healthy, overweight men, 33-64 y, oppose bulk index (in kg m 2 ) 30-46 and was a clinical intervention question of circulating metabolites and hunger-satiety responses before and after weight loss.


Measures included anthropometry (bioelectrical impedance, entity weight, and waist circumference), concentrations of circulating hormones and metabolites ketone bodies, for free fatty acids (FFAs), insulin, leptin, glucose, and cholecystokinin (CCK), and measures of famine and satiety at baseline, 8 wk after weight loss with a very-low-energy diet, and 1 wk after weight maintenance. Results: Weight loss led to a lessening in postprandial CCK secretion ( P 0.016).


However, when subjects were ketotic (elevated circulating & 946;-hydroxybutyrate concentrations), CCK secretion was sustained at concentrations before weight loss. After weight loss, there were reduced postprandial FFA concentrations ( P 0.0005). The presence of ketosis sustained FFA to concentrations before weight loss ( P 0.60).


Conclusion: Hurried weight loss of 10% of initial thing weight results in a decrease in postprandial CCK and FFA concentrations.


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